2001 ford f150, 4x4,5.4 liters

Question

Need to know what part number for 02 sensor for trouble code number p0174,please

Answer 1

P0174 Fuel trim lean Bank 2

The 02 sensor part number is F88Z9F472AB , If you you replace the 02 sensor , this may not be the probelm with the code condition, what the 02 is doing is reporting the condition. lean Bank are mostly cause by vacuum leaks, especially the intake or the injector seal, or the the brake booster vacuum hose. check for vacuum leaks first.